64440060 has 24 divisors (see below), whose sum is σ = 180432336. Its totient is φ = 17184000.

The previous prime is 64440049. The next prime is 64440071. The reversal of 64440060 is 6004446.

It is an interprime number because it is at equal distance from previous prime (64440049) and next prime (64440071).

It is a self number, because there is not a number n which added to its sum of digits gives 64440060.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536941 + ... + 537060.

It is an arithmetic number, because the mean of its divisors is an integer number (7518014).

Almost surely, 2^64440060 is an apocalyptic number.

64440060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64440060 is an abundant number, since it is smaller than the sum of its proper divisors (115992276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64440060 is a wasteful number, since it uses less digits than its factorization.

64440060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074013 (or 1074011 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 64440060 is about 8027.4566333304. The cubic root of 64440060 is about 400.9146983894.

It can be divided in two parts, 644 and 40060, that added together give a palindrome (40704).

The spelling of 64440060 in words is "sixty-four million, four hundred forty thousand, sixty".